CVE Watch10 sept 2026

CVE-2026-89044

Netty versions 4.1.133.Final through 4.1.137.Final and 4.2.13.Final through 4.2.17.Final fail to properly validate the final transfer coding

CVSS

6.5

Medio

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 10 sept 2026 · Última mod.: 10 sept 2026 · CWE-444

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Netty versions 4.1.133.Final through 4.1.137.Final and 4.2.13.Final through 4.2.17.Final fail to properly validate the final transfer coding in the Transfer-Encoding header, allowing attackers to smuggle requests by using malformed encoding declarations. Attackers can split Transfer-Encoding headers across multiple lines or use values like 'chunked, xchunked' to bypass validation and decode messages as chunked when the final coding is not chunked, enabling request smuggling attacks.

Referencias oficiales

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